[University Of Arizona]. A Jupiter-sized world just 7.5 light-years away is cloudy, chemically complex, and, it turns out, more like home than anyone expected.
biosignature
Posted inBiogeochemical Cycles & Geobiology
Activity And Diversity Of Sulfate- and Methane-based Pathways Of Anaerobic Chitin And N-acetylglucosamine Degradation In Marine Sediments
[American Society of Microbiology] Sulfate reduction is estimated to account for half of the organic carbon respiration in anoxic, organic-rich ocean sediments. Sulfate-reducing microorganisms (SRMs) typically oxidize simple carbon compounds, […]
Posted inImaging & Spectroscopy
A Missing Continental Impact Melt Sheet Signal In The Early Earth Detrital Zircon Record
[Nature Communications] Impact-derived melting has been proposed as a significant process in the formation of Earth’s early crust which could mean that impact melts are a source for Earth’s oldest […]
Posted inExtremeophiles and Extreme Environments
Whole-Genome Metagenomics Insights Revealed a Uranium Bio-remediating Cross-Domain Microbiome in the Dhala Impact Structure, India
[biorxiv.org] Meteorite impact structures on earth represent unique terrestrial analogues of extreme planetary environments where fractured lithologies, hydrothermal alteration, elevated concentrations of radionuclides, and prolonged water-rock interactions create ecological niches […]
Posted inOrigin & Evolution of Life
Computational Modeling Of An RNA-peptide World
[biorxiv.org] Emergence and evolution of functional RNA and protein structures are the central problems for understanding the origin of life.
Posted inHabitable Zones
Virus-integrated Laboratory Models For Habitability Studies Of Enceladus, Europa, And Titan
[Journal of Virology]. Biogeochemical models have become critical for answering questions about the habitability of ocean worlds, especially that of early Earth.
Posted inOrigin & Evolution of Life
The Abiotic Background: Challenges and Opportunities in the Search for Evidence of Life Beyond Earth
[Astrobiology (Journal) via PubMed]. The “Exploring the Abiotic Background for Life Detection“ workshop was convened between March 31, 2025, and April 3, 2025, at the Carnegie Institution for Science in […]
Posted inBiosignatures & Paleobiology
Carbon and Sulfur Isotopes of Microfossils and Pyrites from Neoarchean Cherts: Microbial Diversity in an Ancient Deep-Marine Environment
[Astrobiology (Journal) via PubMed] The 2.52 Ga Gamohaan Formation in South Africa offers critical insights into microbial ecosystems that inhabited deep-marine environments during the late Archean.
Posted inMars
Stability Of Uracil In Different Sulphates Under Martian-like UV Irradiation
[Icarus] Mars is one of the most probable and accessible places where life could have evolved beyond Earth.
![Conceptual diagrams of the three experimental setups used to produce the tholin samples measured in this study: (a) UNI/PAC, (b) JHU/PHAZER, (c) ARC/COSmIC featuring a diagram of the pulsed discharge nozzle adapted from Sciamma-O’Brien et al. (2014).-- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/A-Cross.png?resize=1200%2C634&ssl=1)
Posted inTitan
A Cross-Laboratory Comparison Study of Titan Haze Analogs: Surface Energy II
[astro-ph.EP] The organic haze particles on Titan play important roles in atmospheric cloud formation and aerosol-lake interactions.